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9.15.3 Charge-air coolant – Draining
Preconditions
☑
Engine is stopped and starting disabled.
Special tools, Material, Spare parts
Designation / Use
Part No.
Qty.
Sealing ring
(→ Spare Parts Catalog)
WARNING
Coolant is hot and under pressure.
Risk of injury and scalding!
• Let the engine cool down.
• Wear protective clothing, gloves, and goggles / safety mask.
Draining charge-air coolant
1.
Provide a suitable container to catch coolant.
2.
Turn valve cover on coolant expansion tank counterclockwise to first stop and release pressure.
3.
Continue to turn valve cover counter-clockwise and remove.
4.
Draw off separated corrosion inhibitor oil in expansion tank through filler neck.
5.
Unscrew drain screw (1) and drain charge-air
coolant at thermostat housing.
6.
Open drain valve (2) and drain charge-air
coolant at charge-air coolant pump.
210 | Low-Temperature Circuit | MS15060/01E 2018-12
TIM-ID: 0000079645 - 001